“periscopic”的英文意思_释义_用法

单词

periscopic

释义

periscopic, a.|pɛrɪˈskɒpɪk|
[f. as periscope n. + -ic: cf. telescopic. In mod.F. périscopique.]
Enabling one to see distinctly for some distance around the axis of vision: applied to a lens or eye-glass so formed as to give a wide field of view; also to concavo-convex lenses.
1804Wollaston in Nicholson's Jrnl. VII. 241 Experiment proving the Advantage of Periscopic Spectacles.1812― in Phil. Trans. 370 On a Periscopic Camera Obscura and Microscope.1822J. Imison Sc. & Art I. 461 These glasses are called Periscopic spectacles, from their affording the opportunity of looking round.1875Knight Dict. Mech. 1668/2 Dr. Wollaston's periscopic lens for microscopes had two plano-convex lenses ground to the same radius, and between their plane surfaces a thin plate of metal with a circular aperture.1899J. Cagney Jaksch's Clin. Diagn. x. (ed. 4) 434 The periscopic eye-pieces..are very excellent.
So periˈscopical a. = periscopic a.
a1846Eclec. Rev. cited by Worcester.

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